Answer:
69% Ag, 10.5% S, 20.5% O.
Explanation:
Ag₂SO₄ → Molar mass = 311.8 g/mol
2 mol of Ag → 107.87g/m . 2m = 215.74 g
1 mol of S → 32.06g/m . 1m = 32.06 g
4 mol of O → 16g/m .4m = 64 g
Percentage composition will be:
(Mass of Ag/ Total mass) . 100
(215.74 g / 311.8 g) . 100 = 69 %
(Mass of S/ Total mass) . 100
(32.06 g / 311.8 g) .100 = 10.5%
(Mass of O/ Total mass) . 100
(64 g / 311.8 g) . 100 = 20.5 %
Answer: The mass of the nucleus is less than the mass of the 8 protons and 8 neutrons.
Explanation:
Concrete is classified as a homogeneous mix
<h2>
Answer</h2>
2.626984127 m
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Explanation:</h2><h2>
</h2>
You have to know the equation that relates wavelength, frequency, and velocity (it's like speed but a bit different).
v = f x λ
where:
v = velocity
f = frequency
λ = Wavelength
Rearrange to make λ subject:
λ = v / f
We've been given 331 as the speed, 126 as the frequency. Sub it into the equation:
331 / 126 = 2.626984127 m
